Chemistry Past Questions and Answers

The element with the electron configuration 1s²2s²2p³ is

A decrease in atomic size and an increase in nuclear charge across a period lead to

The order in which a mixture of sand, ammonium chloride and sodium chloride can be separated is

The idea of planetary electron was that of

If 30cm³ of gas at 50^oC is warmed to 80^o at a fixed pressure, the fractional increase in volume is